187.95% is the change from 224 to 645
Calculation steps:
[( 645 - 224 ) ÷ 224] x 100 = 187.95%
Formula
Percentage change = [(645 - 224) / 224] x 100
Subtract the new number by the original number
645 - 224 = 421
421 ÷ 224 = 1.8794642857142858
1.8794642857142858 x 100 = 187.95%